Electric locomotive.



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PATBNTED SEPT. 17, 1907.

' .'A.'F..BATCHBLDBR.

ELECTRIC LOCOMOTIVE. APPLIOATION FILED 00121. 1905.

. h 'wentor Asa F Batcheldef i.

Witnesses TE T 21 5 PA E 'r ()FFiCm.

ASA F. BATCHELDlER, Ol" SOHENECTADY, NEW YORK, ASSIGNORTO GENERALELEOTRIC COMPANY, A CORPORATION OF NEW YORK.

ELEerRIc LOCOMOTIVE Patented Sept. 17, 1907.

Application filed October 21,1905 Serial No. 283,717. r

' mechanical frame of the locomotive. In practice the ,cross-sctional area of the mechanical frame oithe locomotive is materially loss than that required to elli- .ciently carry the magnetic flux, and it therefore be-' comes necessary to either make-the locomotive frame heavier than is necessary for mechanical purposes or in some other way to add sufiicient metal to give the desired area at all points in the magnetic circirit.

The object of the present invention is to so construct and arrange the parts of an electric locomotive that the magnetic circuit may include all of the motor armatures and pole-pieces arranged in series, without necessitating the use of unusually heav'y mechanical frames or other dead weight for the purpose of procuring the requisite cross'section in the magnetic gircuit.

' To the-above ends I propose toiarrange upon each of the driving axles two armatures, each ,bf which has its separate pole-pieces, and connect the field coils in such a manner that the magnetic flux passes longitudinally $0 of the locomotive through one set of armatures and pole pieces and back again through the other set. In this way the only portions of the frame which need carry the whole flux are the cross members to which the polepieces at the extreme ends areattached;

In the accompanying drawing I have illustrated one form in which the present invention may be carried out, said drawing showing in plan view a locomotive frame with the driving wheels in place and motors mounted and arranged in accordance with the present.

40 invention. I

Reference being had to the drawing, 1 and 2 repre- 'sent the usual side members of a locomotive frame, and

3, 3, 3, cross pieces; 4, 4, 4, 4, are sets of drivers associated with the frame in any usual manner. Orr-each of the driving axles is arranged a pair of motor arma tures, 5 and 6, rotating between poles 7, 7, and 8, 8, re spectivoly. The armaturcs on each'axle are illus'ttated as being connected to a common commutator 9 but it is of course understood that independent commutators 6 0 may be employed. The field winding or windings may be placed at any desired point or points and are of such character as to produce a magnetic flux of proper magnitude through one series of pole-pieces and armatures and back again throughthe othcrserios. A preform-d way of arranging the field windings is to form each polv- 5 5 piece of a corellO supported upon one of the cross-mombers 3 and surrounded by a winding 11. By counocting the terminals of the several field windings pro purl y to a source of current supply, the windings will generate lincs of force which pass in the same direction through one series oi pole-pieces and armaturcs thrmigh a cross-member 3", through the other series of polepieces and armatures and thence through the -socond cross-member 3, which completes the circuit. I,

The principal frame members, 1, 2 and 3, it will be 6.5 seen, are not included in the main-magnetic circuit and need not, therefore, be made heavier tharr" is necessary to give the requisite mechanical strength.

These members are not, however, entirely without function as magnetip elements "of the motor apparatus, since theyprovide local circuits for any excess of magnetism in the individual motors, v 1 What I claim as new and desire to secure by Letters Patent of the United states,- is,-- u

1. In an electric locomotive, two serlcs of al'mntures and pole-pieces arranged longltudinally of the locomotlvc, crbss members at each end for completlng a magnetic clrcult through said series, andmeans-for producing a mugnetlc flux through sold magnetic clrcult.

2. In an electric locomotive, a mechanical frame, two longltudlnslly-extendlng serles -of pow-nieces supported upon sald frame, lrmatures associated with said poleplcccs, and menus for producing a umn'm-Llc flux through said two series of polepleees In series wish each other and the associated armaturos. I

In an elcEtrlc locomotive, a mechanical frame, drlvlug axles mounled ln'sald framq apalr of urmatures located upon each drlvlng axle, independent polc-pfeces for the urmatures of each palr currled by said frame, and field windings for producing a magnetic flux through a circult made up of one armature of each palr and its associated pole-plcces ln series wltlr the rcmalnlngarmature of each palr and Its pole-pleura.-

4. In an clectrlc locomotlve, a mechanical frame, drivlug axles mounted in said frame, a pair of armatures loouted upon each drlvlug axle, cross=mcmbcrs ln 'snld frame, Independent pole-pieces for the urmatures of each pair supported by cold cross members, and field windings. for, producing a magnetic flux through one armature of'cuch pair and Its assoc'lated-bole-pleces ln serles with the rennrlnlng armatures und pole-pleces. 4

5. In an electrical locomotive, a plurality of pairs of armutures arranged for rotation, and means for producing a magnetic flux through said armutures ln serlesr 6. In an electrlcal locomotive, a plurality of shafts, two aruiatures on each shaft, and field cells and cores for produclng a. magnetic flux through snld srmatures In series.

In wltness whereof, I have hereunto set my hand this 20th day of 0ctober, 1905.

ASA 1i, BATCHELQEllQ-j Wltnesses:

Bmuunn B. HULL, Hanan Oll-BOllb. 

